3In 2 separate medium bowls, add 1 cup of the boiling water into each flavor of gelatin. Beat each with whisk until completely dissolved. With large spoon, drizzle raspberry gelatin over 1 cake; drizzle green gelatin over remaining cake. Refrigerate 1 to 3 hours to allow gelatin to set up in cakes.

4To remove cakes from pans, dip pans in warm water 10 seconds. Unmold 1 cake onto serving platter; spread 1 1/2 cups of the whipped topping on top of cake. Unmold second cake; carefully place on first cake on platter.